EP 0292623 B1 19940803 - Apparatus for and methods of forming airlaid fibrous webs having a multiplicity of components.
Title (en)
Apparatus for and methods of forming airlaid fibrous webs having a multiplicity of components.
Title (de)
Vorrichtung und Verfahren zur Bildung von luftgelegten Faserbahnen mit vielen Bestandteilen.
Title (fr)
Appareil et procédés pour former des nappes fibreuses ayant une multiplicité de composants à partir d'un courant d'air.
Publication
Application
Priority
EP 87304758 A 19870529
Abstract (en)
[origin: EP0292623A1] Apparatus for and methods of forming, from a single column of fibres, an airlaid fibrous web having a multiplicity of components. The apparatus (20) is of the type which includes a first airlaying means (34) such as a first laydown drum (100) having a first foraminous forming element; a second airlaying means (46) such as a second laydown drum (110) having a second foraminous forming element; a splitting means (200) for splitting a column of fibres into a multiplicty of fibre streams and for entraining each of the fibre streams in air so as to provide a multiplicity of streams (54, 56, 58) of air-entrained fibres; a first deposition means (36) for directing a first stream (54) of air-entrained fibres from the splitting means (200) to the first airlaying means (34); a second deposition means (48) for directing a second stream (58) of air-entrained fibres from the splitting means (200) to the second airlaying means (46); a dusting layer deposition means (42) for directing a dusting layer stream (56) of air-entrained fibres from the splitting means (200) to the first airlaying means (34); and uniting means (52) for uniting a first web component (1008) that is formed on the first airlaying means (34) with a second web component (1010) that is formed on the second airlaying means (46) to form an airlaid fibrous web having a multiplicity of components. The method preferably comprises the steps of: a. providing a multiplicity of streams (54, 56, 58) of air-entrained fibres; b. directing a first stream (54) of air-entrained fibres toward a first airlaying means (34); c. forming a first web component (1008) from the first stream (54) of air-entrained fibres on said first airlaying means (34); d. directing a second stream (58) of air-entrained fibres to a second airlaying means (46); e. forming a second web component (1010) from the second stream (58) of air-entrained fibres on said second airlaying means (46); and f. uniting (52) said first web component (1008) and said second web component (1010) to form an airlaid fibrous web having a multiplicity of web components. a
IPC 1-7
IPC 8 full level
A61F 13/15 (2006.01); D04H 1/72 (2006.01); D04H 1/732 (2012.01); D04H 1/736 (2012.01); D21F 9/00 (2006.01)
CPC (source: EP)
A61F 13/15626 (2013.01); D04H 1/72 (2013.01); D04H 1/732 (2013.01); D04H 1/736 (2013.01); D21F 9/00 (2013.01); A61F 2013/15821 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0292623 A1 19881130; EP 0292623 B1 19940803; AT E109526 T1 19940815; DE 3750331 D1 19940908; DE 3750331 T2 19950105; ES 2056818 T3 19941016; HK 98796 A 19960614
DOCDB simple family (application)
EP 87304758 A 19870529; AT 87304758 T 19870529; DE 3750331 T 19870529; ES 87304758 T 19870529; HK 98796 A 19960606